code: def is_group_field(field):
      """Determines whether the given field is a group field.
  
      Args:
          field: a :class:`fiftyone.core.fields.Field`
  
      Returns:
          True/False
      """
      return isinstance(
          field, fof.EmbeddedDocumentField
      ) and issubclass(field.document_type, Group)
  
file_path: fiftyone/fiftyone/core/groups.py
imports: from copy import deepcopy
  from bson import ObjectId
  import fiftyone.core.fields
  import fiftyone.core.odm
label_desc: Use image node_id 1 for calling a global function with example usage: is_group_field(field) and returns: unknown